Crab



A..HOFFMANN AND B. BOMBORN.

. c'mus, APPLICATIQ?! FILED JUNE 29, 1920,

u Patented Sept. 5, 1922-.

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ALEXANDER HOFFMANN, or BnaLrN-nnimcnnmnean, .AND ABERNHARD'.noiresman, or anntIN,ennMANY;sarn HOFFMANN .essIeNoR To sain BOMBORN.

GRAB.

Appncaiien mea .rune 2e, 1920. serial no. 392,826.

To all whom t may concern:

Be it known that we, ALEXANDER Horn MANN, a citizen of Russia, and BERNHARD BoarnonN, a citizen of the Republic of Germany, residing at Berlin-Reimckendorf, (ferma ny, and Berlin, Germ any, respectively, have invented certain new and useful lmprovements inl Crabs, of which the following isa specification."

My invention refers to lifting devices and more. especially toa device'for hoistingfand transporting goods in which a single driving member e. g. an electromotor) works the hoisting and the transport. lt is .an object of my invention to insert a planet gear between the driving member (electromotor) and either the hoist gear or the transport ening and loosening (coupling` and uncoupling) parts of the intermediate gear, the movement of the motor is transferred either to the hoist gear or to the transportgear. Apart from some essential constructions of the gear the mode of steering the electrome-4 tor forms a further invention.

In the drawings affixed to this. specification and forming part thereof different modn iiications of this inventionare shown by way of example. f

ln the drawings Fig. 1 is a longitudinal section of the device j Fig. 2 is a section following the line A.-B in Fig. l, as viewed from the right,

Fig. 3 a. vertical section of Fig. 2 in the plane of shaft 28 showing the coupling levers,

Fig. 4 is a side view of another modification.

Fig. a section following line C-D in Figs. 4 and 6,

F ig. G a longitudinal section,

Fig. 7 a section following line EF in Fig. 6 as viewed from the right,

F ig. 8 a section following line I-K in Fig. 6 ras viewed from the right,

Fig. 9 a section following line G-H in Fig. 6 as viewed from the right,

Fig. 10a 'longitudinal section of a third modification with two pairs of planet wheels,

Fig. 11 thegearas shown in Fig. 12 in longitudinal section, appliedtoa swivelling prominent feature of my y lthe wheels`2. gear in such wise that by alternately tightl Figs. 13 and 14 show two further modifications.

Referring to Figs. 1 to 3 1 is the Lheam, 2 are the wheelsthat run on.1ts ybottom flange. Shaft 21 of electro motor 4 projects intothe chest 11 capsuling the gear and bears a drive-r 6. This latter meshes with a tooth-wheel 7 whose centre shaft 8 rotates in a ycrank or disk 16. The driver* 9 of this shaft 8 is engaged with a of the drawings,

"tooth=whe'el 10, which is connected with ropedrum. 15 or a chain-wheel by means of the wheels 13 and 14.

The disk 16. has an external toothed rim 17 which can he madey to mesh with the tooth-wheels 18, 19 and 2O and so act upon .Chest 11 supports a shaft 28 which has two eceentrical cam discs 25, 26 displaced relatively to one another and which can he movedbackwardsand forwards by a rope or commanding pulley27. These cams press against the arms of double levers 23, 24, whose opposite ends are cogged and fity into the toothed rimsof therotating crank 16 or the tooth-wheel 10. @ne or several springs 29`endeavor to throw the gear. in hyv their pressure. rFhe eccentrics 25, 26 are displaced relatively4 to each otherA so that lever 23 en-r gages the toothwheel 17 and couples it when 24 is uncoupled, and vice versa (Fig. 2 shows the latter. position.)

Supposing ,the command pulley 27 to bey turnedv so that lever 23. couples the wheel 17 .and that lever v24 10, if now the rotor is set inmotion, :the latter is transferred by tootlrwheels 6, 7, 9, 10, 13, 14 to the rope-drum 15. ln' this case a highly efficient normal gear is attained. lf on the other hand the coupling is reversed hy moving the command pulley 27, i. e. iftooth-wheel 10 is coupled then the motor shaft21 turns the driver 6 and tooth-'wheel 7, `whose driverV 9 fixed upon shaft 8 revolves around wheel wheel; crank 16 revolves in a like manner wheels 2 by means of thetoothavheels 18, 19,' 20. '.lo yensure a good balancing of forces does not touch wheel (the wheels 7, 9 can he` arranged in pairs op-k the `centrehole for the at theho'ttom of crank posed to each other; other shaft is shown 16.y

disk.

3 and 5 signify' a brakey and brake separated' and the rope-drum is arranged between them. Here the motion is transferred to the transport wheels 2 from the rotating crank 16 by the wheels 89, 90, 91. ln Fig. 13 the hoisting member consists of a chainwheel 15, `in Fig. u1st of a rope-drum 15. Importance must be attached to the fact that the electromotor 4 and its commanding machinery as well as the gear inside the gearchest 11 remain exactly the same. Solely the supporting frame 12 in Fig. 14 must be longer than in Fig. 13; equally must the motor shaft 21 be elongated (e. g. by inserting an adapting or coupling piece) and the chain-wheel 15 of Fig. 13 must be exchanged for a driver 92 in Fig. 14E, which meshes with a toothed rim (in this case an inside rim 98) of drum 15. By inserting this intermediate gear 92, 93 an identical hoisting speed of drum 15 and of chain-wheel 15 is obtained. `Thus the motor power is exploited to the same degree for chain and rope drive and identical castings for the entire gear are obtained for chain and rope drive, whereby the manufacture of the individual types is made less expensive.

rl`he overhead crabs can equally be itted to be used for rope conveyors and for central command.

We wish it to be understood, that we do not desire to be limited to the exact details of construction shown and described, for obvious modifications will occur to a person skilled in the art.

lVe claim:

l. A load lifting and traversing device comprising in combination, a motor, a winch, a traversing wheel, a planet wheel gear, comprising a planet wheel carrier and a planet wheel, inserted between said motor and said winch and traversing wheel, a driving wheel for said planet gear disposed coaxially with said planet gear and means for separately locking said planet wheel carrier and said winch, respectively.

2. A load lifting and traversing device comprising in combination, a motor, a winch, a traversing wheel, a planet wheel gear, comprising a planet wheel carrier and a planet wheel, inserted between said motor and said winch and traversing wheel, a tooth gear meshing with said winch, a driving wheel for said planet gear disposedco-axially with said planet gear, said planet wheel meshing with said tooth gear and means for separately locking said planet wheel carrier and said tooth gear, respectively.

3. A load lifting and traversing device comprising in combination, a motor, and a motor shaft, a winch, a traversing wheel, a planet wheel gear, comprising a planet wheel carrier and a planet wheel, inserted between said motor and said winch and travn ersing wheel, a tooth gear meshing with said winch, a driving wheel for said planet gear disposed coaxially with said planet gear, on said motor shaft, said planet wheel meshing with said tooth gear and means for separately locking said planet wheel carrier and said tooth gear, respectively.

4;. A load lifting and traversing device comprising in combination, a motor, a winch, a traversing wheel, a planet wheel gear, comprising a planet wheel carrier and a pair of planet wheels arranged coaxially on said rcarrier, inserted between said motor and said winch and traversing wheel., a tooth gear meshing with said winch, a driving wheel for said planet gear disposed coaxially with said planet gear, one of said planet wheels meshing with said tooth gear, the other with said driving wheel and means for separately locking said planet wheel carrier and said tooth gear, respectively.

5. A load lifting and traversing device comprising in combination, a motor, a winch, a traversing wheel, a planet wheel gear, coinprising a planet wheel carrier and a planet wheel, inserted between said motork and said winch and traversing wheel, an internally toothed wheel meshing with said winch and comprising an internally toothed wheel, a driving wheel for said planet gear disposed coaxiaily with said planet gear, said planet wheel meshing with said internally toothed wheel and means for separately locking said planet wheel carrier and said internally toothed wheel, respectively.

6. A load lifting and traversing device comprising in combination, a motor, a winch, a traversing wheel, a planet wheel gear, comprising a planet wheel carrier and a planet wheel inserted between said motor and'said winch and traversing wheel, a driving wheel for said planet gear disposed coaxially with said planet gear and spring-controlled cogged. levers for separately locking said planet wheel carrier and said winch, respectively, and means for alternately traversing one of the other levers in.

In testimony whereof we our signatures.

ALEXANDER HOFFMANN. BERNHARD BOMBORN. 

